C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Egr replacement

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Old Nov 5, 2024 | 08:17 PM
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Default Egr replacement

I was trying to replace my egr with a new one so I took off the intake manifold and I got defeated by the 2 bolts that keep the egr mounted I manage to get one off but the other one was really tight and couldn’t get it loose especially for how much small space there is and no room for play. Any tips?
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Old Nov 5, 2024 | 10:11 PM
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I used a boxed end flex wrench on the bolt but also used the two wrench trick for leverage on the tight one with limited space.

It'll come right off once you have the leverage you need.
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Old Nov 5, 2024 | 11:06 PM
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Originally Posted by Natty C
I used a boxed end flex wrench on the bolt but also used the two wrench trick for leverage on the tight one with limited space.

It'll come right off once you have the leverage you need.
going to try it in a bit thanks!
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Old Nov 5, 2024 | 11:30 PM
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Just did that job, agree on flex head ratchet wrench
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Old Nov 5, 2024 | 11:46 PM
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Originally Posted by dburgjohn
Just did that job, agree on flex head ratchet wrench
I tried that but didn’t do it with the wrench trick and the ratchet part kept coming up on one of the ends everytime I pulled it to loosen
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Old Nov 6, 2024 | 07:41 AM
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Since i was replacing it anyways, i bent the egr itself over to be more out of my way. I also sacrificed a wrench, 3/8s i think. I cut it short enough to fit down in there. YMMV.
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Old Nov 9, 2024 | 10:50 AM
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Originally Posted by Bskrrush
I tried that but didn’t do it with the wrench trick and the ratchet part kept coming up on one of the ends everytime I pulled it to loosen
I imagine you already got it off, but I just held the wrench down on the bolt with my other finger so it wouldnlt pop off it.
Then it only takes one good turn to break it free. Smooth sailing from there...
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Old Nov 9, 2024 | 11:10 AM
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Try a little bit of heat and the boxed wrench or a flange wrench !! A small torch but not anything big. Don't overheat aluminum.....

Last edited by Vets-Vet; Nov 9, 2024 at 01:40 PM.
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